Knowing the trees can help one have successful mushroom hunts. Another good guide is Trees and Shrubs of Virginia, by Oscar W. Gupton and Fred C. Swope.
You rarely go wrong with the Peterson Field Guides. Amphibians seem especially threatened by climate change. We need to know and protect them. Another good book, by Donald W. Linzey and Michael J. Clifford, is Snakes of Virginia.
This book used to be subtitled "Invertebrates and Seaweeds of the Atlantic Coast from the Bay of Fundy to Cape Hatteras." It helped me identify comb jellies and a few other weird beasties near Chesapeake Bay.
This is one of our most-used field guides. Beware of wildflower guides showing the flower but not the rest of the plant - the leaves and stems can be very helpful clues.
Subjects include snow crystals and snow ecology, birds' nests and winter bird behavior, evidence of insects, animals tracks and signs, winter weeds and wildflowers, evergreen plants, and wintering trees.
Enables birders to recognize birds of eastern and central North America by their songs and calls. Points out exactly what to listen for to tell one bird from another. Available on both cassette and CD.
There are more mammals out there than you think - an acre of land was recorded to have a population of 12,000 voles! You might also like Mammals of the Carolinas, Virginia, and Maryland, by Webster, Parnell, and Biggs.
It's not exactly field guide-sized, but IS "an illustrated guide to fishes, invertebrates, and plants of bays and inlets from Cape Cod to Cape Hatteras." It also discusses the natural history of the organisms. Yay!
